sulfonated oils

Oils rendered soluble in water by chemical
treatment with sulfuric acid. Most sulfonated oils
are actually soaps, but the fatty acid has a
soluble sulfonic group combined with it, which
tends to give it a limited water solubility even
when the soap is decomposed by the addition of the
acid. Sulfonated oils are used in FATLIQUORING leather,
in the preparation of cotton fiber, as mordants
for certain dyes. as finishing oils in silk,
linen, and leather manufacture, and in paint and
varnish making. (305 , 363 )